Rifle-wielding robber storms supermarket near Caboolture

A 16-year-old shop attendant has been left terrified after a robber brandished a rifle during a raid of a supermarket in Queensland’s south-east.

CCTV showed the masked thief storm the IGA supermarket in Wamuran, near Caboolture, about 6.55pm yesterday.

Armed with a gun, the man demanded cash from the teenage shop attendant, who was seen cowering behind a roll of paper towel.

She was forced to enter the backroom of the store and take money out of the safe.

CCTV captured the robber approaching the counter of the IGA supermarket in Wamuran. (9NEWS) ()The masked offender was shown pointing a rifle at the teen girl. (9NEWS) ()The 16-year-old was forced to retrieve cash from the store's safe. (9NEWS) ()

The robber then fled the scene with a sum of cash, police said.

IGA store owner Luke Baker told 9NEWS he was “disgusted” by the crime.

“It's just disgusting that they planned to get a girl that's so young, or wait for someone that's so vulnerable, to strike,” Mr Baker said.